Evaluation of the effect of spray application of amino acid and organic products on enzyme activity and oil yield of soybean (Glycine max L.) at different harvest times

Articles in Press

Document Type : Research Paper

Authors

1 Research Assistant Professor of Rice Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Rasht, Iran.

2 Ph.D. Crop Physiology, Gilan Agricultural Meteorology Research Center

3 Professor, Department of Agriculture, Faculty of Agricultural Sciences, University of Gilan. Rasht

10.22034/saps.2025.63897.3289

Abstract

In order to investigate the effect of amino acid and organic products on the quantitative and qualitative characteristics of soybeans at different harvest times, a factorial experiment was conducted in the form of randomized complete blocks with 24 treatments and 3 replications in the years 2010-2012 at the Country Rice Research Institute (Rasht).The experimental treatments include1-Fe nano-chelate (20.00),2-Kadostim (0.50.00)3-Aminol Forte (20.00).4-Magnetic water (20 lit.m-2).5-municipal solid waste compost (10 ton.ha-1 )6. animal manure (cow, 10 ton.ha-1,), and 7. nitrogen fertilizer (50.00 of urea source) plus a control treatment and three harvesting times including harvesting when the pod seeds in the main stem had 20-25% moisture and the second harvest when the pods are fully ripe and the pod seeds in the main stem had 14-15% moisture, and the third harvest when the pod seeds in the main stem had less than 14% moisture. The comparison of the composite mean of the interaction effect of the treatments showed that the spraying of Fe nano-chelate and the second harvest time had the highest amount of peroxidase enzyme, catalase enzyme, grain and protein yield and oil yield. the maximum concentration of MDH was in control treatment and the third harvest time.Based on the results of this experiment, it seems that due to the oil and protein yield and the high nutritional value of soybeans, spray application of Fe nano-chelate and the time of the second harvest increase the quantity and quality of the product in the direction of reducing environmental pollution and sustainable agriculture.

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Journal of Agricultural Science and Sustainable Production

Articles in Press, Accepted Manuscript
Available Online from 23 October 2026

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